EP1266850B1 - Feed table - Google Patents
Feed table Download PDFInfo
- Publication number
- EP1266850B1 EP1266850B1 EP02012209A EP02012209A EP1266850B1 EP 1266850 B1 EP1266850 B1 EP 1266850B1 EP 02012209 A EP02012209 A EP 02012209A EP 02012209 A EP02012209 A EP 02012209A EP 1266850 B1 EP1266850 B1 EP 1266850B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sheets
- sheet
- feed
- deflection rollers
- plane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H11/00—Feed tables
- B65H11/002—Feed tables incorporating transport belts
- B65H11/005—Suction belts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H5/00—Feeding articles separated from piles; Feeding articles to machines
- B65H5/36—Article guides or smoothers, e.g. movable in operation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/40—Type of handling process
- B65H2301/44—Moving, forwarding, guiding material
- B65H2301/443—Moving, forwarding, guiding material by acting on surface of handled material
- B65H2301/4431—Moving, forwarding, guiding material by acting on surface of handled material by means with operating surfaces contacting opposite faces of material
- B65H2301/44312—Moving, forwarding, guiding material by acting on surface of handled material by means with operating surfaces contacting opposite faces of material between belts and rollers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
- B65H2511/20—Location in space
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2513/00—Dynamic entities; Timing aspects
- B65H2513/50—Timing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
- B65H2515/30—Forces; Stresses
- B65H2515/34—Pressure, e.g. fluid pressure
Definitions
- the invention relates to a method for feeding sheets and a feed table according to the preamble of claim 2.
- feed table For applying sheets to a sheet-processing machine, in particular a printing press, usually a feed table is used, the sheet can be fed from a sheet feeder in an approximately horizontal feed level.
- the feed table is inclined relative to the feed plane, wherein about the region of the kink between feed plane and feed table a deflection roller is arranged, can be deflected by the sheet from the feed plane in the plane of the feed table.
- feed tables are preferably designed as so-called suction belt tables, wherein the sheets to be transported are held by suction on circulating around the feed table endless conveyor belts.
- the known devices have the disadvantage that a secure system or edition of the sheet is not reached on the feed table.
- a suction belt table preferably a suction belt table. Otherwise there is a risk that the transport via the suction belt table is not exact and the supply of the sheets to the sheet-processing machine is faulty. This often leads to annoying production disruptions and increased waste.
- the object of the invention is therefore to provide a device on a Tinlegetisch of the aforementioned type which is suitable for processing in particular thicker sheets and also for sheets of high rigidity, and by means of which all sheets safely both deflected as well as the feed table of each production start empty feed table to be fed to the exact further transport at full takeover also by a suction belt table.
- the pulleys are first lifted by means of their adjusting means after production start and then delayed, but employed with increased contact force. This avoids that the leading edge of the first sheet can abut the pulleys. At the same time the secure adhesion of the sheet is made possible on the Saugbändem the Saugb. After safer Taking over the sheet through the suction belt table, the contact force is reduced to a level harmless for the sheet.
- the deflection rollers are advantageously arranged in their rest position perpendicular to the plane of the feed plane above. They are straight or pivotally movable about a pivot point.
- an actuator is provided which is connected to the control of the sheet processing machine or the sheet feeder.
- the actuator is advantageously provided with a control device for changing the force acting on the pulleys.
- the deflection rollers used in the arrangement are freely rotatably mounted, so that it can not come to a sanding marks on the sheet by a deflection roller.
- a simple design is achieved in that the deflection roller are designed as relatively narrow deflection wheels and is arranged at the free end of a holder.
- a guide of the arc over a longer distance section is reached and a high-pitched the rear end of the sheet largely avoided when the pulleys are arranged to several in the conveying direction one behind the other.
- the deflection wheels are arranged at a distance from each other and mutually rotatably mounted on the holder as a common carrier, the contours of the deflection wheels overlap each other, so a safe investment of each sheet can be guaranteed at all pulleys, so that each sheet safely on the feed table or is guided on a guided over the feed table conveyor belt.
- it is used when a plurality of holders with deflecting wheels are arranged transversely to the conveying direction at a distance next to one another.
- the feed table 1 shown in the figures is designed as a suction belt table and has a table surface at the ends directed in the conveying direction 2 band rollers 3 are arranged, are guided over the endless conveyor belts 4.
- the conveyor belts 4 can be driven by one of the belt rollers 3 and transport sheets in the conveying direction 2 to a printing press.
- the suction belt table has a suction device on which the conveyor belts 4 are guided such that negative pressure acts on the conveyor belts 4 by means of holes provided in the conveyor belts 4 in such a way that the sheets adhere to the conveyor belts 4.
- FIG. 1 shows a first variant of the device.
- the sheets B at the higher end of the inclined arranged feed table 1 are supplied approximately horizontally above the feed plane 5 forming surface of a sheet stack of a sheet feeder.
- On the feed side tiltable stops 6A may be provided, which are only hinted at here. These stops 6A release the sheet path from the stack of sheets to the band roll 3.
- the forward movement of the sheet B to the feed table 1 is effected by not shown here, cyclically engageable on the belt roller 3 Duprolls causes.
- the sheet B is clamped between the band roller 3 and the Dupfrollen and through the rotation of the band roll 3 moves forward.
- the duping rollers only act selectively on the band roller 3.
- an additional feed roller 6 of the belt roller 3 may be arranged upstream. Then the Dupfrollen cooperate with this conveyor roller. The sheets are then fed at the higher end of the inclined arranged feed tray 1 of the sheet feeder via a bridging plane of the belt roller 3. The bridging plane then forms the feed plane 5, which is important in the invention.
- each conveyor belt 4 associated with arranged an array of pulleys 8
- the pulleys 8 consist of a holder 11 and guide wheels 9, attached to the holder 11 mutually are.
- the axial distance of the guide wheels 9 is chosen so that the contours of the guide wheels 9 cover something. This results in a quasi-continuous guide surface on the underside of the guide rollers 8.
- the deflecting wheels 9 may be arranged on the holder 11 in the direction of the connection of their axes of rotation at least above the belt roller 3 in an approximately arcuate manner.
- the guide surface of the deflection rollers 8 on the inlet side is oriented approximately tangentially to the conveying plane 5 from the feeder and on the outlet side parallel to the table surface of the feed table 1.
- the transition from the horizontal to the conveying plane of the feed table 1 can be curved by the arrangement of the deflection rollers 8.
- the holder 11, together with the deflection wheels 9 are fastened to a pneumatic cylinder 13.
- the pneumatic cylinder 13 is double-acting and via its connections with a pneumatic valve, not shown here connected.
- the pneumatic valve is remotely controllable and connected to the machine control.
- the pneumatic valve has a switching possibility for changing the operating pressure and thus at the same time the contact force of the pneumatic cylinder 13 in the setting position relative to the feed table 1.
- the pneumatic cylinder 13 can carry the guide rollers 8 directly on its piston rod.
- the deflection rollers 8 can also be arranged pivotably on their support 11 on a pivoting arm 10 about an axis 14 relative to the feed table 1.
- the deflection rollers 8 are pivoted away from the feed table by means of the pneumatic cylinder 13 (FIG. 3A).
- the first or the first two sheets run so initially uninfluenced over the kink to the feed table, but remain by the Unterschuppung still in their desired position, with so-called Dupfrollen 16 on the conveyor roller 6 for the further propulsion of the bow. With stiff materials, however, the bends will not drop by themselves down to the feed table 1.
- the guide rollers 8 are lowered by means of the pneumatic cylinder 13 on the feed table ( Figure 3B).
- the protruding sheets are pressed onto the feed table 1 by means of the guide rollers 8.
- the employment takes place with an increased Anstellkraft to ensure that the sheets are placed flat on the conveyor belts 4 (suction belts) of the feed table 1. There will be They were immediately taken over by the Saugdruck and over the effective negative pressure and transported. This fulfills an important precondition for the exact onward transport of the sheets to the printing press. If the sheet flow securely adheres to the Saugbändem, the contact pressure of the pneumatic cylinder 13 is reduced against the guide rollers 8 by means of the control valve.
- the setting of the pneumatic cylinder 13 can also be continuously varied by means of the control valve. Then you can choose the appropriate reduced contact pressure for substrates of different sensitivity. Likewise, depending on the rigidity of the printing material, the required increased contact pressure can be adjusted.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Delivering By Means Of Belts And Rollers (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
- Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zum Zuführen von Bogen und einem Anlegetisch nach dem Oberbegriff des Anspruchs 2.The invention relates to a method for feeding sheets and a feed table according to the preamble of
Zur Anlage von Bogen an eine Bogen verarbeitenden Maschine, insbesondere eine Druckmaschine, wird gewöhnlich ein Anlegetisch verwendet, dem Bogen von einem Bogenanleger in einer etwa horizontalen Zuführebene zuführbar sind. Der Anlegetisch ist gegenüber der Zuführebene geneigt, wobei etwa über dem Bereich der Knickstelle zwischen Zuführebene und Anlegetisch eine Umlenkrolle angeordnet ist, durch die Bogen aus der Zuführebene in die Ebene des Anlegetischs umlenkbar sind. Außerdem werden Anlegetische bevorzugt als sogenannte Saugbändertische ausgeführt, wobei die zu transportierenden Bogen mittels Saugluft auf um den Anlegetisch umlaufenden endlosen Transportbändern festgehalten werden.For applying sheets to a sheet-processing machine, in particular a printing press, usually a feed table is used, the sheet can be fed from a sheet feeder in an approximately horizontal feed level. The feed table is inclined relative to the feed plane, wherein about the region of the kink between feed plane and feed table a deflection roller is arranged, can be deflected by the sheet from the feed plane in the plane of the feed table. In addition, feed tables are preferably designed as so-called suction belt tables, wherein the sheets to be transported are held by suction on circulating around the feed table endless conveyor belts.
Hierzu ist es aus der DE 29710296 U1 bekannt, ein Umlenkrollenpaar mittels eines pneumatischen Zylinders gegen den Anlegetisch anstellbar anzuordnen. Mit Hilfe dieser Vorrichtung wird der ankommende Bogen sicher umgelenkt. Es kann nicht sichergestellt werden, dass der Bogen auch einwandfrei vom Anlegetisch übernommen wird, insbesondere, wenn dieser als Saugbändertisch ausgebildet ist. Durch die kraftschlüssige Beaufschlagung kann zudem der Bogen verzogen werden. Daher besteht die Gefahr, dass ein derartiger Bogen nicht richtig zur bogenverarbeitenden Maschine zugeführt werden kann.For this purpose, it is known from DE 29710296 U1, to arrange a deflection roller pair by means of a pneumatic cylinder against the feed table. With the help of this device, the incoming sheet is deflected safely. It can not be ensured that the sheet is properly taken over by the feed table, especially if it is designed as a suction belt table. Due to the positive action, the bow can also be warped. Therefore, there is a fear that such a sheet can not be properly fed to the sheet processing machine.
Auch ist aus der DE 29900995 U1 bekannt, die Umlenkrollen zu mehren einander überlappend und hintereinander gestaffelt anzuordnen. Damit kann erreicht werden, dass eine im wesentlichen linienförmige oder auch bogenförmige Umlenkung mit verbesserter Führung der zugeführten Bogen ermöglicht wird. Ein Anstossen der vorderen Bogenkante wird weitestgehend vermieden. Der Bogen wird allerdings dem Anlegetisch nur lose zugeleitet, wodurch die Gefahr des ungenauen Transports zur Bogen verarbeitenden Maschine besteht.It is also known from DE 29900995 U1 to arrange the pulleys overlapping one another and staggering one behind the other. This can be achieved that a substantially linear or arcuate deflection with improved guidance of the supplied sheet is made possible. An abutment of the front edge of the sheet is largely avoided. The arc However, the feed table is only loosely supplied, whereby the risk of inaccurate transport to the sheet-processing machine consists.
Die bekannten Vorrichtungen weisen den Nachteil auf, dass eine sichere Anlage bzw. Auflage der Bogen auf dem Anlegetisch nicht erreicht wird. Insbesondere bei dickeren Bedruckstoffen ist sicherzustellen, dass die Bogen nach der Umlenkung von dem Anlegetisch, vorzugsweise einem Saugbändertisch, vollständig erfasst werden. Andernfalls besteht die Gefahr, dass der Transport über den Saugbändertisch nicht exakt und die Zufuhr der Bogen zur Bogen verarbeitenden Maschine fehlerhaft erfolgt. Dies führt häufig zu lästigen Produktionsstörungen und zu vermehrter Makulatur.The known devices have the disadvantage that a secure system or edition of the sheet is not reached on the feed table. In particular, with thicker substrates is to ensure that the sheets are completely detected after the deflection of the feed table, preferably a suction belt table. Otherwise there is a risk that the transport via the suction belt table is not exact and the supply of the sheets to the sheet-processing machine is faulty. This often leads to annoying production disruptions and increased waste.
Aufgabe der Erfindung ist es daher, eine Vorrichtung an einem Tinlegetisch der eingangs genannten Art zu schaffen, die zur Verarbeitung insbesondere dickerer Bogen und auch für Bogen hoher Steifigkeit geeignet ist, und mittels derer alle Bogen sicher sowohl umgelenkt als auch dem Anlegetisch von jedem Produktionsbeginn mit leerem Anlegetisch an zum exakten Weitertransport bei vollständiger Übernahme auch durch einem Saugbändertisch zugeführt werden.The object of the invention is therefore to provide a device on a Tinlegetisch of the aforementioned type which is suitable for processing in particular thicker sheets and also for sheets of high rigidity, and by means of which all sheets safely both deflected as well as the feed table of each production start empty feed table to be fed to the exact further transport at full takeover also by a suction belt table.
Diese Aufgabe wird erfindungsgemäß mit den Merkmalen eines Verfahrens nach Anspruch 1 und einer Vorrichtung nach Anspruch 2 gelöst.This object is achieved with the features of a method according to claim 1 and a device according to
Die Umlenkrollen werden hierzu mittels ihrer Anstellmittel nach Produktionsbeginn zunächst abgehoben und dann verzögert, aber mit erhöhter Anstellkraft angestellt. Damit wird vermieden, dass die Vorderkante des ersten Bogens an die Umlenkrollen anstoßen können. Gleichzeitig wird die sichere Anhaftung der Bogen an den Saugbändem des Saugbändertisches ermöglicht. Nach sicherer Übernahme der Bogen durch den Saugbändertisch wird die Anstellkraft auf ein für die Bogen unschädliches Maß reduziert.
Die Umlenkrollen sind vorteilhafterweise in ihrer Ruhestellung senkrecht zur Ebene der Zuführebene oberhalb deren angeordnet. Sie sind geradlinig oder um einen Gelenkpunkt schwenkbar beweglich geführt.
Zum Anstellen der Umlenkrollen ist ein Stellantrieb vorgesehen, der mit der Steuerung der Bogen verarbeitenden Maschine bzw. des Bogenanlegers verbunden ist. Der Stellantrieb ist vorteilhafterweise mit einer Steuereinrichtung zur Veränderung der auf die Umlenkrollen wirkenden Kraft versehen.The pulleys are first lifted by means of their adjusting means after production start and then delayed, but employed with increased contact force. This avoids that the leading edge of the first sheet can abut the pulleys. At the same time the secure adhesion of the sheet is made possible on the Saugbändem the Saugbändertisches. After safer Taking over the sheet through the suction belt table, the contact force is reduced to a level harmless for the sheet.
The deflection rollers are advantageously arranged in their rest position perpendicular to the plane of the feed plane above. They are straight or pivotally movable about a pivot point.
For adjusting the pulleys, an actuator is provided which is connected to the control of the sheet processing machine or the sheet feeder. The actuator is advantageously provided with a control device for changing the force acting on the pulleys.
Vorzugsweise sind die in der Anordnung verwendeten Umlenkrollen frei drehbar gelagert, so dass es durch eine Umlenkrolle nicht zu Schleifspuren auf den Bogen kommen kann. Eine einfache Ausbildung wird dadurch erreicht, dass die Umlenkrolle als relativ schmale Umlenkräder ausgebildet sind und an dem freien Ende eines Halters angeordnet ist.Preferably, the deflection rollers used in the arrangement are freely rotatably mounted, so that it can not come to a sanding marks on the sheet by a deflection roller. A simple design is achieved in that the deflection roller are designed as relatively narrow deflection wheels and is arranged at the free end of a holder.
Eine Führung der Bogen über einen längeren Streckenabschnitt wird erreicht und ein Hochwippen des hinteren Endes des Bogens weitgehend vermieden, wenn die Umlenkräder zu mehreren in Förderrichtung hintereinander angeordnet sind.A guide of the arc over a longer distance section is reached and a high-pitched the rear end of the sheet largely avoided when the pulleys are arranged to several in the conveying direction one behind the other.
Sind die Umlenkräder in einem Abstand zueinander angeordnet und wechselseitig an dem Halter als gemeinsamen Träger drehbar gelagert, wobei die Konturen der Umlenkräder einander überlappen, kann damit eine sichere Anlage jedes Bogens an allen Umlenkrädern gewährleistet werden, so dass jeder Bogen sicher auf dem Anlegetisch bzw. auf ein über den Anlegetisch geführtes Förderband geführt wird. Zum sicheren Umlenken der Bogen dient es, wenn quer zur Förderrichtung im Abstand nebeneinander mehrere Halter mit Umlenkrädern angeordnet sind.If the deflection wheels are arranged at a distance from each other and mutually rotatably mounted on the holder as a common carrier, the contours of the deflection wheels overlap each other, so a safe investment of each sheet can be guaranteed at all pulleys, so that each sheet safely on the feed table or is guided on a guided over the feed table conveyor belt. For safe deflection of the sheet, it is used when a plurality of holders with deflecting wheels are arranged transversely to the conveying direction at a distance next to one another.
Ein Ausführungsbeispiel der Erfindung ist anhand von zeichnerischen Darstellungen dargestellt und wird im folgenden näher beschrieben.An embodiment of the invention is illustrated by means of drawings and will be described in more detail below.
In den Zeichnungen zeigt
- Fig. 1
- eine erste Ausführungsform der erfindungsgemäßen Vorrichtung;
- Fig. 2
- eine zweite Ausführungsform der erfindungsgemäßen Vorrichtung und
- Fig. 3A und 3B
- Funktionsskizzen zum erfindungsgemäßen Verfahren.
- Fig. 1
- a first embodiment of the device according to the invention;
- Fig. 2
- a second embodiment of the device according to the invention and
- FIGS. 3A and 3B
- Function sketches for the method according to the invention.
Der in den Figuren dargestellte Anlegetisch 1 ist als Saugbändertisch ausgebildet und besitzt eine Tischoberfläche an deren in Förderrichtung 2 gerichteten Enden Bänderwalzen 3 angeordnet sind, über die endlose Förderbänder 4 geführt sind. Die Förderbänder 4 sind durch eine der Bänderwalzen 3 antreibbar und transportieren Bogen in Förderrichtung 2 zu einer Druckmaschine. Der Saugbändertisch weist eine Saugvorrichtung auf, Ober die die Förderbänder 4 geführt werden, derart dass Unterdruck durch in den Förderbändern 4 vorgesehene Löcher auf auf den Förderbändern 4 aufliegende Bogen derart wirkt, dass die Bogen an den Förderbändern 4 anhaften.The feed table 1 shown in the figures is designed as a suction belt table and has a table surface at the ends directed in the conveying
In Figur 1 ist eine erste Variante der Vorrichtung dargestellt. Die Bogen B am höher liegenden Ende des geneigt angeordneten Anlegetischs 1 werden etwa horizontal oberhalb der eine Zuführebene 5 bildenden Oberfläche von einem Bogenstapel eines Bogenanlegers zugeführt. An der Zufuhrseite können kippbare Anschläge 6A vorgesehen sein, die hier nur angedeutet sind. Diese Anschläge 6A geben den Bogenweg vom Bogenstapel zur Bänderwalze 3 frei. Die Vorwärtsbewegung des Bogens B zum Anlegetisch 1 wird durch hier nicht gezeigte, auf die Bänderwalze 3 taktweise anstellbare Tupfrollen bewirkt bewirkt. Der Bogen B wird zwischen der Bänderwalze 3 und den Tupfrollen eingeklemmt und durch die Drehung der Bänderwalze 3 vorwärts bewegt. Die Tupfrollen wirken aber nur punktuell an der Bänderwalze 3.FIG. 1 shows a first variant of the device. The sheets B at the higher end of the inclined arranged feed table 1 are supplied approximately horizontally above the
In anderen Ausführungsformen, wie sie in Figur 2 dargestellt ist, kann eine zusätzliche Förderwalze 6 der Bänderwalze 3 vorgeordnet sein. Dann wirken die Tupfrollen mit dieser Förderwalze zusammen. Die Bogen werden dann am höher liegenden Ende des geneigt angeordneten Anlegetischs 1 von dem Bogenanleger über eine Überbrückungsebene der Bänderwalze 3 zugeführt. Die Überbrückungsebene bildet dann die Zuführebene 5, die in der Erfindung von Bedeutung ist.In other embodiments, as shown in Figure 2, an
Im Bereich der Knickstelle 7 über dem zufuhrseitigen Ende des Anlegetisch 1 ist über dem Anlegetisch 1 an- und abstellbar jedem Förderband 4 zugeordnet eine Anordnung von Umlenkrollen 8 angeordnet Die Umlenkrollen 8 bestehen aus einer Halterung 11 und Umlenkrädern 9, die an der Halterung 11 wechselseitig angebracht sind. Der Achsabstand der Umlenkräder 9 ist so gewählt, dass die Konturen der Umlenkräder 9 sich etwas überdecken. Dadurch entsteht an der Unterseite der Umlenkrollen 8 eine quasi kontinuierliche Leitfläche. Die Umlenkräder 9 können an der Halterung 11 in Richtung der Verbindung ihrer Drehachsen wenigstens oberhalb der Bänderwalze 3 in etwa bogenförmig angeordnet sein. Damit kann erreicht werden, dass die Leitfläche der Umlenkrollen 8 einlaufseitig in etwa tangential zur Förderebene 5 vom Anleger her und auslaufseitig parallel zur Tischoberfläche des Anlegetisches 1 ausgerichtet ist. Der Übergang aus der Horizontalen in die Förderebene des Anlegetisches 1 kann durch die Anordnung der Umlenkrollen 8 gekrümmt sein.In the area of the
Weiterhin sind ist die Halterung 11 mitsamt der Umlenkräder 9 an einem Pneumatikzylinder 13 befestigt. Der Pneumatikzylinder 13 ist doppeltwirkend und über seine Anschlüsse mit einem hier nicht dargestellten Pneumatikventil verbunden. Das Pneumatikventil ist femsteuerbar und mit der Maschinensteuerung verbunden. Mittels des Pneumatikventils kann der Pneumatikzylinder 13 in Richtung zu Tischoberfläche des Anlegetisches 1 und von diesem weg gesteuert werden. Weiterhin weist das Pneumatikventil eine Schaltmöglichkeit zur Veränderung des Betriebsdruckes und damit gleichzeitig der Anstellkraft des Pneumatikzylinders 13 in der Anstellposition gegenüber dem Anlegetisch 1 auf. Der Pneumatikzylinder 13 kann die Umlenkrollen 8 direkt an seiner Kolbenstange tragen. Die Umlenkrollen 8 können aber auch an ihrer Halterung 11 an einem Schwenkarm 10 um eine Achse 14 relativ zum Anlegetisch 1 schwenkbar angeordnet sein.Furthermore, the
Die Wirkungsweise der Anordnung ist im Folgenden an Hand der Figuren 3A und 3B näher erläutert:The mode of operation of the arrangement is explained in more detail below with reference to FIGS. 3A and 3B:
Zu Beginn der Zuführung von Bogen vom Bogenanleger zur Druckmaschine werden die Umlenkrollen 8 mittels des Pneumatikzylinders 13 vom Anlegetisch abgeschwenkt (Figur 3A). Der erste oder die ersten beiden Bogen laufen so zunächst unbeeinflusst bis über die Knickstelle zum Anlegetisch, bleiben durch die Unterschuppung aber noch in ihrer Solllage, wobei sogenannte Tupfrollen 16 auf der Förderwalze 6 für den weiteren Vortrieb der Bogen sorgen. Bei steifen Materialien werden die Bogen sich dabei aber nicht von sich aus bis auf den Anlegetisch 1 absenken.At the beginning of the feeding of sheets from the sheet feeder to the printing press, the
Nachdem die vordere Bogenkante nun die Position der Umlenkrollen 8 passiert hat, werden die Umlenkrollen 8 mittels des Pneumatikzylinders 13 auf den Anlegetisch abgesenkt (Figur 3B). Damit werden mittels der Umlenkrollen 8 die vorstehenden Bogen auf den Anlegetisch 1 gedrückt. Die Anstellung erfolgt mit einer erhöhten Anstellkraft, um sicherzustellen, dass die Bogen flächig auf die Förderbänder 4 (Saugbänder) des Anlegetisches 1 aufgelegt werden. Dort werden sie sofort über den wirkenden Unterdruck von den Saugbändem übernommen und weitertransportiert. Damit wird eine wichtige Voraussetzung zum exakten Weitertransport der Bogen bis zur Druckmaschine erfüllt. Wenn der Bogenstrom sicher auf den Saugbändem haftet, wird der Anstelldruck des Pneumatikzylinders 13 gegen die Umlenkrollen 8 mittels des Steuerventils reduziert. Dann bleibt weiterhin sichergestellt, das der Bogenstrom sicher auf den Saugbändertisch geleitet wird. Die Einwirkung auf die Bogenoberfläche wird aber soweit reduziert, dass keine Markierungen mehr zu befürchten sind. Die wenigen Bogen, die mit erhöhtem Anstelldruck beaufschlagt waren, fallen in den Bereich der normalen Makulatur und werden sowieso aus der Produktion aussortiert.After the front sheet edge has now passed the position of the
Die Einstellung des Pneumatikzylinders 13 kann mittels des Steuerventils auch kontinuierlich variierbar sein. Dann kann für unterschiedlich empfindliche Bedruckstoffe der passende reduzierte Anstelldruck gewählt werden. Gleichfalls kann je nach Steifigkeit des Bedruckstoffes der erforderliche erhöhte Anstelldruck angepasst werden.The setting of the
Zur Anstellung der Umlenkrollen 8 an den Anlegetisch 1 kann anstatt des Pneumatiksystems auch ein andersartiger Stellantrieb mit variierbarer Anstellkraft gewählt werden.For employment of the
- 11
- Anlegetischfeed table
- 22
- Förderrichtungconveying direction
- 33
- Bänderwalzebands roll
- 44
- Förderbandconveyor belt
- 55
- Zuführebenefeed plane
- 66
- Förderwalzeconveyor roller
- 6A6A
- Anschlagattack
- 77
- Knickstellekink
- 88th
- Umlenkrollenguide rollers
- 99
- Umlenkradguide wheel
- 1010
- Schwenkarmswivel arm
- 1111
- Halterungbracket
- 1212
- Kolbenstangepiston rod
- 1313
- Pneumatikzylinderpneumatic cylinder
- 1414
- Achseaxis
- 1515
- Kolbenpiston
- 1616
- TupfrolleTupfrolle
- BB
- Bogenbow
Claims (9)
- Method for feeding sheets (B) to a sheet-processing machine by feeding sheets (B) in an underlapped manner from a sheet feeder in a substantially horizontal plane to a feed table (1) which is inclined downwards with respect to the said substantially horizontal plane and is configured as a suction belt table, via a turn point which is defined by the feed plane and the plane of the feed table (1), by deflecting the underlapped stream of sheets by means of deflection rollers (8) at the turn point out of the feed plane into the plane of the feed table (1),- in that sheets (B) are separated from a sheet stack in the sheet feeder and advanced in the direction of the suction belt table,- in that the deflection rollers (8) are raised at the beginning of the sheets (B) being fed as a stream of sheets,- in that at least the first sheet (B) of the stream of sheets remains uninfluenced for the duration of the conveying of its front end until over the turn point and until the front edge has passed the position of the deflection rollers (8),- in that, subsequently, the sheet (B)/the sheets (B) is/are pressed down onto the suction belt table by the deflection rollers (8) being set against the sheet (B)/the sheets (B) which protrudes/protrude beyond the turn point,- in that, subsequently, the adhesion of the sheet (B)/the sheets (B) to the conveying means of the suction belt table which are configured as suction belts (4) is brought about by the deflection rollers (8) being thrown on with increased force, and- in that, finally, the continuous feeding of sheets to the suction belt table is ensured by the setting force of the deflection rollers (8) being reduced at the latest when the first sheets (B) arrive in the sheet-processing machine.
- Apparatus for feeding sheets (B) to a sheet-processing machine, in particular a printing press, in order to carry out the method according to Claim 1, having a feed table (1) to which sheets (B) can be fed in an approximately horizontal plane from a sheet feeder and which is inclined compared with the feed plane, deflection rollers (8) being arranged approximately above the region of the turn point between the feed plane and the feed table (1), it being possible to deflect the sheets (B) out of the feed plane into the plane of the feed table (1) by way of the said deflection rollers (8), and it being possible to set the deflection rollers (8) against the feed table (1) by means of an actuating drive,
characterized- in that the actuating drive is provided with a controller for the temporally controlled setting of the deflection rollers (8) against and off the feed table (1),- in that the controller is connected to the machine controller of the sheet-processing machine,- the deflection rollers (8) being arranged in such a way that, at the beginning of conveying, they can be thrown off into a position of rest in or above the horizontal feed plane,- in that the actuating drive can be activated by means of the controller after at least the front end of the first sheet (B) of a stream of sheets which lies in an underlapped manner has been fed until over the turn point between the feed plane and the feed table (1) and after the front edge of the first sheet (B) has passed the position of the deflection rollers (8),- in such a way that the deflection rollers (8) can be set against the feed table (1) with an increased force, the feed table (1) being a suction belt table, and- that the setting force can be reduced to a second amount after the sheets (B) have been gripped by the suction belt table. - Apparatus according to Claim 2, characterized in that one or more pneumatic actuating drives, preferably pneumatic cylinders (13), are provided, and in that pneumatic control means are provided for the remote-controllable operation of the actuating drives in the throwing-on and throwing-off directions and for the step-by-step or continuous change in the operating pressure of the pneumatic actuating drive or pneumatic actuating drives.
- Apparatus according to Claim 3, characterized in that at least one pneumatic valve is provided which can be used to actuate the actuating drive or actuating drives into the thrown-off position of the deflection rollers (8) and into the thrown-on position with an increased setting pressure and a reduced setting pressure.
- Apparatus according to Claim 4, characterized in that a plurality of deflection rollers (8) are arranged in such a way that they form a guide plane which is preferably not curved or curved slightly, and in that the deflection rollers are mounted such that they can rotate freely.
- Apparatus according to one of the preceding claims, characterized in that the deflection rollers are configured as deflection wheels (9), and in that the deflection wheels (9) are arranged one behind another in the conveying.direction (2) of the sheets (B) at one end of a holder (8, 10).
- Apparatus according to Claim 5, characterized in that the deflection wheels (9) are arranged on the holder (8, 10) in such a way that the contours of in each case two deflection wheels (9) which lie one behind another in the sheet running direction overlap.
- Apparatus according to one of the preceding claims, characterized in that a plurality of holders (8, 10) having deflection wheels (9) are arranged at a distance next to one another transversely with respect to the conveying direction (2).
- Apparatus according to one of the preceding claims, characterized in that a holder (8, 10) having deflection wheels (9) is arranged per suction belt of the suction belt table.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10129007A DE10129007C1 (en) | 2001-06-15 | 2001-06-15 | Feed system for paper sheets, to a sheet-fed printing press, has controlled deflection rollers at the suction belt to act on the sheets moving over the kinked transfer point between the feed plane and the belt |
DE10129007 | 2001-06-15 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1266850A2 EP1266850A2 (en) | 2002-12-18 |
EP1266850A3 EP1266850A3 (en) | 2004-04-21 |
EP1266850B1 true EP1266850B1 (en) | 2006-01-04 |
Family
ID=7688363
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02012209A Expired - Lifetime EP1266850B1 (en) | 2001-06-15 | 2002-06-04 | Feed table |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1266850B1 (en) |
AT (1) | ATE314989T1 (en) |
DE (2) | DE10129007C1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2980462A1 (en) | 2011-09-27 | 2013-03-29 | Sidel Participations | DEVICE FOR TRANSFERRING CUTTERS. |
CN115352914A (en) * | 2022-08-15 | 2022-11-18 | 兆虹精密(北京)科技有限公司 | Paper smoothing mechanism and paper laying machine |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19618870A1 (en) * | 1996-05-10 | 1997-11-13 | Heidelberger Druckmasch Ag | Device for conveying an in particular flaky stream of sheets to a sheet processing machine |
DE29704796U1 (en) * | 1997-03-15 | 1997-05-28 | MAN Roland Druckmaschinen AG, 63075 Offenbach | Feed table |
DE29900995U1 (en) * | 1999-01-21 | 1999-04-01 | MAN Roland Druckmaschinen AG, 63075 Offenbach | Feed table |
-
2001
- 2001-06-15 DE DE10129007A patent/DE10129007C1/en not_active Expired - Fee Related
-
2002
- 2002-06-04 DE DE50205497T patent/DE50205497D1/en not_active Expired - Lifetime
- 2002-06-04 EP EP02012209A patent/EP1266850B1/en not_active Expired - Lifetime
- 2002-06-04 AT AT02012209T patent/ATE314989T1/en active
Also Published As
Publication number | Publication date |
---|---|
EP1266850A3 (en) | 2004-04-21 |
DE10129007C1 (en) | 2002-10-17 |
EP1266850A2 (en) | 2002-12-18 |
DE50205497D1 (en) | 2006-03-30 |
ATE314989T1 (en) | 2006-02-15 |
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